US11137947B2 - Recognizing hard disk movement - Google Patents
Recognizing hard disk movement Download PDFInfo
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- US11137947B2 US11137947B2 US16/450,237 US201916450237A US11137947B2 US 11137947 B2 US11137947 B2 US 11137947B2 US 201916450237 A US201916450237 A US 201916450237A US 11137947 B2 US11137947 B2 US 11137947B2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
- G06F3/0689—Disk arrays, e.g. RAID, JBOD
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
- G06F3/0632—Configuration or reconfiguration of storage systems by initialisation or re-initialisation of storage systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/006—Identification
Definitions
- Embodiments of the present invention generally relate to a method and system for hard disk movement, and more specifically to a method and system for recognizing a hard disk movement in a hard disk array or between different hard disk arrays.
- a conventional block storage device can be installed with a plurality of hard disks, and performs initialization of each disk drive installed in the hard disk array.
- the initialization enables the block storage device to use the hard disk to perform an operation such as read, write or deletion.
- movement of the hard disk is not permitted, meaning that once the hard disk is installed in the block storage device, the hard disk forms cooperation with a certain slot in the hard disk array of the block storage device. Only when the hard disk fails or needs to be replaced can a user use a new hard disk for replacement.
- embodiments of the present invention propose a technical solution to recognition of hard disk movement.
- embodiments of the present invention provide a method of recognizing a hard disk movement, including: recognizing hard disk information recorded in a hard disk in response to the hard disk being moved to a slot in a hard disk array; determining a movement type of the hard disk based on the recognized hard disk information; judging a validity of the hard disk movement based on the movement type; and updating the hard disk information of the hard disk in response to the hard disk movement being judged as valid, wherein the hard disk information includes position information of the hard disk in the hard disk array.
- embodiments of the present invention provide a system for recognizing a hard disk movement, including: a hard disk information recognizing unit configured to recognize the hard disk information recorded in the hard disk in response to the hard disk being moved to the slot in the hard disk array; a movement type determining unit configured to determine a movement type of the hard disk based on the recognized hard disk information; a movement validity judging unit configured to judge validity of the hard disk movement based on the movement type; and a hard disk information updating unit configured to update the hard disk information of the hard disk in response to the hard disk movement being judged as valid, wherein the hard disk information includes the position information of the hard disk in the hard disk array.
- movement of the hard disk in the block storage device may be implemented based on the determination of the hard disk movement type, according to embodiments of the present invention.
- Embodiments of the present disclosure enable the hard disk, after being installed into a certain slot of a certain hard disk array and being initialized, still to be moved to a slot of other hard disk arrays or another slot of the same hard disk array, and to be used as a hard disk at another position (if such a movement is valid).
- Other features and advantages of the present invention will be made easy to understand through the following description.
- FIG. 1 illustrates a schematic view of a hard disk array architecture according to an embodiment of the present disclosure
- FIG. 2 illustrates a schematic flowchart of a method of recognizing a hard disk movement for implementing an embodiment of the present disclosure
- FIG. 3 illustrates a schematic block diagram of a system of recognizing a hard disk movement for implementing an embodiment of the present disclosure
- FIG. 4 illustrates a schematic block diagram of a computer system adapted to practice an embodiment of the present disclosure.
- FIG. 1 illustrates a schematic view of a hard disk array 100 architecture according to an embodiment of the present disclosure.
- the hard disk array 100 shown in FIG. 1 is only an example and should not limit the scopes of functionalities and usages of embodiments of the present disclosure.
- the hard disk array includes a plurality of slots, each slot being able to receive a hard disk.
- a hard disk stated in the embodiment of the present disclosure is not intended to limit the number of physical hard disks to one, but to describe a hard disk unit that can form electrical connection with one slot for data transmission and power transmission.
- a hard disk in the context may have one physical hard disk or a plurality of physical hard disks.
- the “hard disk” in embodiments of the present disclosure is not intended to limit the type of the storage unit to a certain type of hard disk drive, and any device such as a hard disk drive, a solid state drive and the like that can store data should be considered as the “hard disk” of the present disclosure.
- the hard disk array may have a plurality of buses.
- the exemplary hard disk array 100 shown in FIG. 1 has two buses: bus 0 and bus 1.
- Each bus may have a plurality of enclosures, for example, bus 0 of the exemplary hard disk array 100 shown in FIG. 1 has two enclosures: enclosure 0 and enclosure 1.
- each enclosure may have a plurality of slots, for example, the enclosure 0 of the bus 0 of the exemplary hard disk array 100 shown in FIG. 1 has a total of n slots from slot 1 to slot n.
- the maximum number of hard disks that can be received in the hard disk array 100 is n ⁇ 2 ⁇ 2.
- each enclosure has a fixed number of system slots to receive hard disks as system disks, for example, as far as the embodiment shown in FIG. 1 is concerned, each enclosure has four system slots and n ⁇ 4 user slots.
- the system disks usually have a plurality of hard disks and occupy a plurality of system slots according to needs, which usually does not allow the user to perform operation such as read, write or deletion, and the data therein may be concealed for the user.
- the user disks usually may be operated by the user (who has the permission), and the data in the user disks is allowed to be moved by the user. At least two hard disks of the user disks may be bound therebetween to form a Redundant Array of Independent Disks (RAID), to improve data transmission efficiency and to be able to provide a fault tolerating function through data verification.
- RAID Redundant Array of Independent Disks
- FIG. 2 illustrates a schematic flowchart of a method 200 of recognizing a hard disk movement that can implement an embodiment of the present disclosure.
- step S 201 whether there is a hard disk being moved to a slot of the hard disk array is judged. If a hard disk is detected as having been moved to the slot of the hard disk array, hard disk information in the hard disk is identified in step S 202 .
- the hard disk information may be recorded in a segment of information in the hard disk in the form of a data head, or stored in a segment of information in the hard disk in a form of a readable file.
- the embodiment of the present disclosure is not intended to limit the form of the hard disk information. No matter if the hard disk is initialized by a certain hard disk array, the embodiment of the present disclosure is intended to describe that the hard disks (even if not subjected to initialization) may all have the hard disk information. However, as far as an un-initialized hard disk is concerned, it may have a predetermined specific value indicating that the hard disk is not subjected to initialization as the hard disk information, or may have empty hard disk information.
- the hard disk information may have position information.
- the position information may be a specific position of the hard disk in a certain hard disk array shown in FIG. 1 .
- the position information in the hard disk information may define which slot of which enclosure in which bus. For example, ⁇ 0, 1, 2> is the third slot in enclosure 1 of bus 0 (in the embodiment of FIG. 1 , the first four slots of each enclosure are system slots, so the position information ⁇ 0, 1, 2> indicates that the hard disk is a system disk).
- the position information may be empty, or may be a predetermined value that is pre-defined and indicates that the hard disk is a newly-added hard disk, for example, ⁇ 1, ⁇ 1, ⁇ 1>.
- the present disclosure is not intended to limit the format or form of the position information, and any format or form of position information that can reflect the position of the hard disk falls within the protection scope of the present disclosure.
- the position information in the hard disk information indicates the position where the hard disk lies last time in the array. If the hard disk is connected with a certain slot in the hard disk array and the hard disk is judged as valid (which will be described below in detail), the position information in the hard disk information will be updated, indicating a position where it lies now in the array. On the contrary, if the hard disk is connected with a certain slot in the hard disk array, but the hard disk is judged as invalid, the position information in the hard disk information will not be updated, indicating the position where it lies last time.
- the hard disk information may further include initialization information which indicates whether the hard disk is a newly-added hard disk or previously has already been used in a certain hard disk array.
- the newly-added hard disk may have hard disk information which may be preset by a supplier in all the supplied hard disks.
- the initialization information in the hard disk information may be represented by 0 and 1, with “0” representing that the hard disk is not initialized (namely, may represent the newly-added hard disk) while “1” representing that the hard disk has already been initialized.
- the newly-added hard disk may also have empty hard disk information. It should be appreciated that embodiments of the present disclosure are not intended to limit the form of representing the initialization information, and any representation form that can be read should be included in the scope of the present disclosure.
- the hard disk information recorded in the hard disk cannot be recognized immediately. For example, if the initialization information in the hard disk information shows that it is not initialized, the hard disk may be judged as the newly-added hard disk.
- the hard disk information may further include array serial number information.
- FIG. 1 only shows an exemplary hard disk array 100 .
- the block storage device according to the embodiment of the present disclosure may have a plurality of hard disk arrays, so the hard disk movement between these arrays should be detected.
- the array serial number information in the hard disk information may be a non-negative integer.
- 3 may indicate the fourth hard disk array.
- the array serial number information may be a character string of any length and indicate a serial number of an array which is specific and cannot be repeated.
- the array serial number information may be empty, or may be a predetermined value that is pre-defined, for example ⁇ 1, indicating the hard disk is a newly-added hard disk.
- the present disclosure is not intended to limit the format or form of the array serial number information, and any format or form of array serial number information that can reflect the serial number of the array where the hard disk lies falls within the protection scope of the present disclosure.
- the hard disk type information may also be a character string of any length.
- the system disk may be represented as “SYST” while the user disk may be represented as “USER.”
- the array serial number information may be empty, or may be a predetermined value that is pre-defined, for example ⁇ 1, indicating the hard disk is a newly-added hard disk, or any pre-defined character string.
- the present disclosure is not intended to limit the format or form of the hard disk type information, and any format or form of hard disk type information that can reflect the hard disk type falls within the protection scope of the present disclosure.
- the hard disk type information is identified as a user disk
- whether the hard disk belongs to RAID may also be judged.
- a memory configuration in the hard disk array can be used to judge whether a certain hard disk belongs to RAID.
- the system disk in the hard disk array belongs to RAID, but the user disk in the hard disk array might or might not belong to RAID. Whether it belongs to the RAID is configured by the user according to needs, and therefore will not be detailed herein.
- step S 203 a movement type of the hard disk is determined.
- the determining step may be obtained by comparing a current position of the mobile hard disk in the hard disk array and the hard disk information recorded in the hard disk (namely, the position of the hard disk last time).
- the hard disk when the hard disk is inserted into a certain slot, it is desirable to obtain some information about the inserted hard disk, for example, whether the hard disk is a newly-added hard disk, a user disk in other arrays, a system disk in other arrays, an unbound user disk in the same array, a bound user disk in the same array and a system disk in the same array (the system disk may be defaulted as being bound).
- the system disk may be defaulted as being bound.
- movement types of the hard disk may be classified into 15 types as respectively listed in the following Table 1.
- each of the movement type of the hard disk may be determined by specific hard disk information and an insertion position of the hard disk in the block storage device, which may be obtained from Table 2.
- the initialization information represents that the hard disk is not initialized, and 1 represents that the hard disk has already been initialized. If the hard disk is not initialized, comparison of the array serial number, the hard disk type information, and comparison of the position information all do not apply. Besides, if the array serial number information indicates difference from the array of the slot in which the hard disk is inserted, this indicates that the hard disk comes from another hard disk array, and whether the hard disk belongs to the RAID and comparison of the position information do not apply.
- step S 204 validity of movement of the hard disk is judged based on the determined hard disk movement type.
- This may be preset by the user or system, namely, any type of movement is not allowed.
- the movement type 10 namely, “bound user drive from the current array inserted to a system slot” is not to be allowed, and meanwhile movement type 15 , namely, “system drive from the current array inserted to a user slot” is allowed.
- FIG. 3 illustrates a block diagram of a system 300 for recognizing the hard disk movement according to an exemplary embodiment of the present disclosure.
- the system 300 includes a hard disk information recognizing unit 301 configured to recognize the hard disk information recorded in the hard disk in response to the hard disk being moved to the slot in the hard disk array; a movement type determining unit 302 configured to determine the movement type of the hard disk based on the recognized hard disk information; a movement validity judging unit 303 configured to judge validity of the hard disk movement based on the movement type; and a hard disk information updating unit 304 configured to update the hard disk information of the hard disk in response to the hard disk movement being judged as valid, wherein the hard disk information includes the position information of the hard disk in the hard disk array.
- the movement type determining unit 302 may include a position information comparing unit configured to compare the position of the hard disk in the hard disk array and the position information in the hard disk.
- the hard disk information may include at least one of the following items: hard disk type information, initialization information, and array serial number information.
- the movement type determining unit 302 may include an array serial number comparing unit configured to compare an array serial number of the hard disk in the hard disk array and the array serial number information in the hard disk.
- the hard disk type information may include system disk and user disk.
- the system may include a redundant array of independent hard disk judging unit configured to judge whether the hard disk belongs to a redundant array of independent hard disk in response to the hard disk type information being recognized as the user disk.
- the above embodiments of the present disclosure may make the hard disk movement in the block storage device possible because the movement types of the hard disk can be determined and whether the judgment is valid is judged based on the determined movement type.
- the user may pre-determine whether the hard disk belongs to the valid movement type or the invalid movement type, and achieves the hard disk movement based on the determined valid movement type of the hard disk.
- FIG. 4 illustrates a schematic block diagram of a computer system adapted to practice an embodiment of the present disclosure.
- the computer system as shown in the figure includes a CPU (Central Processing Unit) 401 , a RAM (Random Access Memory) 402 , a ROM (Read Only Memory) 403 , a system bus 404 , a hard disk controller 405 , a keyboard controller 406 , a serial interface controller 407 , a parallel interface controller 408 , a display controller 409 , a hard disk 410 , a keyboard 411 , a serial peripheral device 412 , a parallel peripheral device 413 and a display 414 .
- a CPU Central Processing Unit
- RAM Random Access Memory
- ROM Read Only Memory
- the CPU 401 connected to the system bus 404 are the CPU 401 , the RAM 402 , the ROM 403 , the hard disk controller 405 , the keyboard controller 406 , the serial interface controller 407 , the parallel interface controller 408 and the display controller 409 .
- the hard disk 410 is coupled to the hard disk controller 405 ;
- the keyboard 411 is coupled to the keyboard controller 406 ;
- the serial peripheral device 412 is coupled to the serial interface controller 407 ;
- the parallel peripheral device 413 is coupled to the parallel interface controller 408 ;
- the display 414 is coupled to the display controller 409 .
- FIG. 4 is shown only for illustration purpose, and is not intended to limit the scope of the present invention. In some cases, some devices may be added or reduced according to specific situations.
- embodiments of the present invention may be implemented in the manner of a computer program product.
- the method 200 as described with reference to FIG. 2 may be implemented via a computer program product.
- This computer program product may be stored in RAM 402 , ROM 403 , flash disk 410 and/or any suitable storage medium as illustrated in FIG. 4 , or downloaded to the computer system 400 from a suitable location in the network.
- the computer program product may include a computer code portion including a program instruction that may be executed through a suitable processing device (for example, CPU 401 in FIG. 4 ).
- the program instruction may at least include: an instruction for enabling one or more entities to execute a task set including a plurality of tasks, each task in the plurality of tasks being used to access the storage system; an instruction for obtaining an index set of the storage system based on the execution result, the index set including one or more indices for indicating the performance of the storage system; and an instruction for adjusting the task set based on the index set for subsequent execution of the one or more entities.
- the embodiments of the present invention can be implemented in software, hardware or the combination thereof.
- the hardware part can be implemented by a special logic; the software part can be stored in a memory and executed by a proper instruction execution system such as a microprocessor or a design-specific hardware.
- a proper instruction execution system such as a microprocessor or a design-specific hardware.
- the normally skilled in the art may understand that the above method and system may be implemented with a computer-executable instruction and/or in a processor controlled code, for example, such code is provided on a bearer medium such as a magnetic disk, CD, or DVD-ROM, or a programmable memory such as a read-only memory (firmware) or a data bearer such as an optical or electronic signal bearer.
- the apparatuses and their modules in the present invention may be implemented by hardware circuitry of a programmable hardware device such as a very large scale integrated circuit or gate array, a semiconductor such as logical chip or transistor, or a field-programmable gate array, or a programmable logical device, or implemented by software executed by various kinds of processors, or implemented by combination of the above hardware circuitry and software.
- a programmable hardware device such as a very large scale integrated circuit or gate array, a semiconductor such as logical chip or transistor, or a field-programmable gate array, or a programmable logical device, or implemented by software executed by various kinds of processors, or implemented by combination of the above hardware circuitry and software.
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Abstract
Description
TABLE 1 | |
No. | Movement types of a drive |
1 | New drive inserted to a user slot |
2 | New drive inserted to a system slot |
3 | User drive from other array inserted to a user slot |
4 | User drive from other array inserted to a system slot |
5 | Unbound user drive from the current array inserted |
to its original user slot | |
6 | Unbound user drive from the current array inserted |
to a different user slot | |
7 | Unbound user drive from the current array inserted |
to a system slot | |
8 | Bound user drive from the current array inserted to |
its original user slot | |
9 | Bound user drive from the current array inserted to |
a different user slot | |
10 | Bound user drive from the current array inserted to |
a system slot | |
11 | System drive from other array inserted to a user slot |
12 | System drive from other array inserted to a system |
slot | |
13 | System drive from the current array inserted to its |
original system slot | |
14 | System drive from the current array inserted to a |
different system slot | |
15 | System drive from the current array inserted to a |
user slot | |
TABLE 2 | ||||||
Serial | Whether the | Which | ||||
numbers | array serial | slot the | Whether the | |||
of hard | number | Whether the | position | position | ||
disk | information | Hard disk | hard disk | of the | information | |
movement | Initialization | accords with | type | belongs to | hard disk | accords with |
types | information | the array | information | RAID | lies in | the position |
1 | 0 | Not | Not | No | User | Not |
applicable | applicable | sot | applicable | |||
2 | 0 | Not | Not | No | System | Not |
applicable | applicable | slot | applicable | |||
3 | 1 | No | User disk | Not | User | Not |
applicable | sot | applicable | ||||
4 | 1 | No | User disk | Not | System | Not |
applicable | slot | applicable | ||||
5 | 1 | Yes | User disk | No | User | Yes |
sot | ||||||
6 | 1 | Yes | User disk | No | User | No |
sot | ||||||
7 | 1 | Yes | User disk | No | System | No |
slot | ||||||
8 | 1 | Yes | User disk | Yes | User | Yes |
sot | ||||||
9 | 1 | Yes | User disk | Yes | User | No |
sot | ||||||
10 | 1 | Yes | User disk | Yes | System | No |
slot | ||||||
11 | 1 | No | System | Not | User | Not |
disk | applicable | sot | applicable | |||
12 | 1 | No | System | Not | System | Not |
disk | applicable | slot | applicable | |||
13 | 1 | Yes | System | Yes | System | Yes |
disk | slot | |||||
14 | 1 | Yes | System | Yes | System | No |
disk | slot | |||||
15 | 1 | Yes | System | Yes | User | No |
disk | sot | |||||
Claims (12)
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CN201510004540.1 | 2015-01-04 | ||
CN201510004540.1A CN105893282B (en) | 2015-01-04 | 2015-01-04 | Hard disk mobile identification method and system |
US14/984,502 US10331386B2 (en) | 2015-01-04 | 2015-12-30 | Recognizing hard disk movement |
US16/450,237 US11137947B2 (en) | 2015-01-04 | 2019-06-24 | Recognizing hard disk movement |
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US11842084B2 (en) * | 2022-04-26 | 2023-12-12 | Netapp, Inc. | Detecting and persisting across boots types of backing storage of cloud volumes available to a virtual storage system |
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CN105893282B (en) | 2019-11-12 |
US20160196090A1 (en) | 2016-07-07 |
CN105893282A (en) | 2016-08-24 |
US10331386B2 (en) | 2019-06-25 |
US20190310802A1 (en) | 2019-10-10 |
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